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Clinical Trials/NCT07071012
NCT07071012CompletedNot Applicable

Ultrasound-Guided Thoracic Paravertebral Block Versus External Oblique Intercostal Block for Postoperative Analgesia After Open Radical Nephrectomy: A Randomised Controlled Trial

Hacettepe University2 sites in 2 countries98 target enrollmentStarted: August 1, 2025Last updated:
Interventions
Drugs

Trial Snapshot

Phase
Not Applicable
Status
Completed
Enrollment
98
Locations
2
Primary Endpoint
Postoperative Pain Score

Study Overview

Brief Summary

This study aims to compare the effects of external oblique intercostal block versus paravertebral block on postoperative pain and complications in patients undergoing open nephrectomy.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Treatment
Masking
Single (Participant)

Eligibility Criteria

Ages
18 Years to 90 Years (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Aged 18 to 90 years
  • Scheduled for elective open radical nephrectomy for renal cell carcinoma
  • ASA classification I-III
  • Mini-Mental State Examination score ≥24
  • Provided written informed consent

Exclusion Criteria

  • Neuropathy
  • Hepatic failure
  • Coagulopathy
  • Local anesthetic allergy
  • Mini-Mental State Examination score <24
  • Refusal to participate

Arms & Interventions

Paravertebral block

Active Comparator

Patients scheduled to undergo thoracic paravertebral block will receive an injection of 20 ml of 0.25% bupivacaine hydrochloride into the paravertebral space between the parietal pleura and the costotransverse ligament using a block needle under ultrasound guidance.

Intervention: Bupivacaine (Drug)

Paravertebral block

Active Comparator

Patients scheduled to undergo thoracic paravertebral block will receive an injection of 20 ml of 0.25% bupivacaine hydrochloride into the paravertebral space between the parietal pleura and the costotransverse ligament using a block needle under ultrasound guidance.

Intervention: morphine (Drug)

Paravertebral block

Active Comparator

Patients scheduled to undergo thoracic paravertebral block will receive an injection of 20 ml of 0.25% bupivacaine hydrochloride into the paravertebral space between the parietal pleura and the costotransverse ligament using a block needle under ultrasound guidance.

Intervention: paracetamol (Drug)

Paravertebral block

Active Comparator

Patients scheduled to undergo thoracic paravertebral block will receive an injection of 20 ml of 0.25% bupivacaine hydrochloride into the paravertebral space between the parietal pleura and the costotransverse ligament using a block needle under ultrasound guidance.

Intervention: Diclofenac (Drug)

External Oblique Intercostal Block

Active Comparator

Patients scheduled to undergo an external oblique intercostal block will receive an injection of 30 ml of 0.25% bupivacaine hydrochloride between the external oblique muscle and the intercostal muscle at the level of the 6th rib, using a block needle under ultrasound guidance.

Intervention: Bupivacaine (Drug)

External Oblique Intercostal Block

Active Comparator

Patients scheduled to undergo an external oblique intercostal block will receive an injection of 30 ml of 0.25% bupivacaine hydrochloride between the external oblique muscle and the intercostal muscle at the level of the 6th rib, using a block needle under ultrasound guidance.

Intervention: morphine (Drug)

External Oblique Intercostal Block

Active Comparator

Patients scheduled to undergo an external oblique intercostal block will receive an injection of 30 ml of 0.25% bupivacaine hydrochloride between the external oblique muscle and the intercostal muscle at the level of the 6th rib, using a block needle under ultrasound guidance.

Intervention: paracetamol (Drug)

External Oblique Intercostal Block

Active Comparator

Patients scheduled to undergo an external oblique intercostal block will receive an injection of 30 ml of 0.25% bupivacaine hydrochloride between the external oblique muscle and the intercostal muscle at the level of the 6th rib, using a block needle under ultrasound guidance.

Intervention: Diclofenac (Drug)

Outcomes

Primary Outcomes

Postoperative Pain Score

Time Frame: Up to 24 hours after surgery

Pain intensity measured using Visual Analog Scale at rest. (Visual Analog Scale ranging from 0 = no pain to 10 = worst pain imaginable; higher scores indicate worse pain).

Secondary Outcomes

No secondary outcomes reported

Investigators

Sponsor Class
Other
Responsible Party
Principal Investigator
Principal Investigator

Almıla Gulsun Pamuk

Associate Professor

Hacettepe University

Study Sites (2)

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